<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>欢迎页</title>
</head>
<style>
*{
    margin: 0;
    padding: 0;
}
.box{
    width: 100%;
    height: 100%;
    background:url('image/welcome.jpg') no-repeat center center;
    position: fixed;
    background-size:100% 100%;
    top: 0;
    left: 0;
    
}
.button{
    background-color: #3399ff;
    border: none;
    color: white;
    padding: 15px 32px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 16px;
    margin: 350px 140px;
    vertical-align: middle;
    border-radius: 20px;
}
</style>

<body>
    <div class="box">
            <a href="html/home.html" class="button">进入应用</a>
    </div>
</body>
</html>